{"id":"e48170e3-b4e6-4d75-80f6-39b4abddc862","title":"黑河生态水文遥感试验：黑河流域中游PLMR反演土壤水分数据集","title_en":"HiWATER: Dataset of retrieved soil moisture products using PLMR brightness temperatures in the middle reaches of the Heihe River Basin","serial":"HiWATER","user_limit":"本数据由“黑河生态水文遥感试验（HiWATER）”产生，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。","instructions":null,"description":"本数据集包含HiWATER黑河中游人工绿洲试验区共计5个PLMR飞行日的土壤水分遥感反演产品，飞行日期分别为：2012年6月30日，7月7日，7月10日，7月26日，8月2日。利用三角度（7°，21.5°，38.5°）双极化共六个通道的PLMR亮温观测，并结合Levenberg-Marquardt优化算法，对土壤水分（SM)、植被含水量（VWC）和地表粗糙度参数（Hr）同时进行三参数反演，得到空间分辨率700m的土壤表面体积含水量（单位cm3/cm3，代表约5cm深度的平均含水量）。本数据集格式为asc，投影为UTM（中央经线47°N）。土壤水分的反演结果通过生态水文无线传感器网络和人工土壤水分同步观测数据进行了验证，结果表明土壤水分产品的总体精度在0.05cm3/cm3左右，其中7月7日与7 月10日的反演精度可达0.04cm3/cm3左右。利用PLMR亮温反演得到的黑河中游绿洲土壤水分数据集，可为流域陆面/水文模型及数据同化提供数据集，对于揭示绿洲灌溉空间格局以及发展土壤水分产品的尺度转换算法也有重要意义。","doi":"10.3972/hiwater.174.2014.db","projection":"UTM47°N","language":"zh","share_type":"online","east":100.7339,"west":100.2208,"south":38.675,"north":39.0672,"scale":0,"crs":null,"filesize":0.027,"share_policy":"a","ts_created":"2017-08-26T05:49:56+08:00","doi_type":null,"ts_updated":"2021-04-19T16:51:25.400308+08:00","time_description":null,"datas_group":3,"time_description_en":null,"data_format":"las","project":[10,11,15],"specials":["ee3dfdf5-2e9f-4b61-a301-4fb49e30e3c2","9d7c87d4-1a81-4c89-97a4-0f6d6df0c1e8","2387b035-d6ff-4c22-81ef-7ce5bf6b6d43","4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":null,"review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":null,"spatial_resolution":null,"license":null,"fund":[39,43,47],"subtopics":{"metadata":"e48170e3-b4e6-4d75-80f6-39b4abddc862","three_pole":null,"third_pole":null},"username":"胡晓利","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":13488}